The Soprano achievement is awarded automatically when Playa sings along with the radio. The available songs are all played by 107.77 The Mix FM. To increase the chances of Playa singing, listen to a custom playlist containing only the songs associated with Playa's current voice.

Achievements named "Fluffer" and "Kingpin" are also present in Saints Row, albeit with different requirements.

Since they are calculated using Statistics, Achievements for performing something X times are tallied per profile, not per save file. For instance, if 30 people are mugged in one game, then a new game is started and 20 people mugged, the achievement for mugging 50 people is unlocked.

The Achievement "Seppuku" gets it's name from a Japanese suicide ritual, in which Samurai are to "die with some honour", which is a line spoken by Jyunichi in his final battle with Playa at Kanto.